| Citation | Madsen, F.J. 1952 Echinoidea, Asteroidea and Ophiuroidea from depths exceeding 6000 meters. Galathea Report: Scientific Results of the Danish Deep-Sea Expedition Round the World 1950-52, 2:23-32. | 
| DOI / ISBN | |
| Paper URL | |
| Ref. No. | 77113 | 
| Language | English | 
| Usage | used in part | 
| Comments on the publication | |
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